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ALFRED GIFFORD AND ROBERT L. FELTS, OF MILROY, INDIANA. Laim Patent No.67,038, dared Juzg 23, 1867.

IMPROVEMENT IN SAW-MILLS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, ALFRED GIFFQRD and ROBERT L. FELTS, of Milroy, inthe'eounty of Rush, and State of Indiana, have invented a newand'improved Saw-Mill; and we do hereby declare that the following is afull, clear, and exact description thereof, which will -enableothers'skilled in the art to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure 1 is a. side sectional view of our invention, taken in theline a: 9 1, fig. 2. Y

Figure 2 is a plan or top view of the same. I

Figure 3, a transverse yertical section of the same, taken in the line yy, fig. 1.

Figure 4, a side view of the same. t

Figure 5, a detached view of a pawl pertaining to the feed mechanism ofthe same.

Similar letters of reference indicate like parts.

This invention relates to a new and improved reciprocating saw-mill, andhas for its object portability, to admit of the whole machine beingdrawn from place to place by two yokes of cattle, and also to admit ofbeing driven or run by a small engine, and to operate rapidly. I

A represents the framing of the machine, which may be constructed in anyproper manner to support the workingparts; and B is a shaft placed inthe lower part of said framing, and having a driving-pulley, C, keyed onits outer end, and a crank-pulley, D, keyed on its inner end. E is thesaw, the upper end of which is attached to a spring, F, on the framingA, the lower-end being securedto an arm, G, one end of which issecuredin the framing by a pivot, (Lapin, of the pulley D working in anoblong slot, c, in the arm G, as shown clearly in iig. 1. The saw iskept in a proper taut state (strained) by the spring F, and thereciprocating motion is lgiven the saw by the pin of the crank-pulley D,working in the oblong slot c of the arm G, the spring F preventing jarsand concussions. 0n the shaft B, adjoining the driving-pulley C, thereis a smaller pulley, H, around which and a loose pulley, I, on a shaft,J, a cross-belt, K, passes. The sha-ft J is parallel'vwith the shaft B,and the former has a pulley, L, firmly keyed on its outer end, a pim-d,projecting horizontally from the inner side of pulley L, to fit into atube in the loose pulley I whenever it is desired to connect the pulleyI with the shaft J. M is a lever, the fulcrum-pin e of which passes intothe end of shaft J. This lever has an oblong slot,f, made in its lowerpart to receive a rod, N, which is attached tothe driving-pulley C by apin, y, the latter passing into pulley- C at some distance from itscentre, in order that the rodv N may be operated with a crank movementas the pulley C rotates, The rod N may be made to work higher or lowerin the slot f, accordingto the length of stroke it is desired to givethe lever -M, by having a cord, 2,. attached to the lever, said cordpassing over the framing A, and secured at different points by having arod,j, which is attached to the cord z, fitted on different pins k inthe side of the framing, (see fig. O is a pawl composed of a straightbar, having a notch, Z, made in its under side, with oblique sides, asshown clearly in iig. 5. The ripper end of the lever is fitted in oneend of this pawl O, which is placed over the pulley L, the top of thelatter being in the notch l of the paul. The opposite end ofthe pawl isconnected to the lower end of a spring, P, and a cord, m, isalsoattached to the lower end of said spring, the cord m passing throughholes in an upright, mand horizontal board o, and also through a guidep, and attached at its upper end to one end of a lever, Q, on the upperpart of the framing.v The opposite end of the lever Q has a rod, R,attached to it, with a hook or oye, g, at its lower end, to catch uponany of a series of pins, r, in the framing, and by adjustinfor thislever the spring I may be drawn outward and the pawl O renderedinoperative when desired. Cin the inner end of the shaft .I there is apinion, S, which gears into a rack at the under side of thelog-ca1riage(not shown, as it is of ordinary construction.) l

As the saw E is operated through the medium of the crank-pulley D andslotted arm G, the log is fed to the saw by means of the pawl O actingupon the pulley L, the pawl being vibrated by the lever M, which isactuated by the rod N from the pulley D, the length of stroke ofthe pawlbeing regulated by adjusting the rod N higher or lower in the slotj` ofthe' lever M, by means of the cord z', and theinner end of the pawl keptin proper position by the spring P. I The pawl acts upon the pulley Leach time the saw rises, so that the log will be fed to the saw duringthe upward kstroke of the latter only; and in order to gig back thecarriage, the loose pulley I is moved toward the pulley L, so thatthepin d vof the latter may t in the hole of the former,

and the spring P, by adjusting the cord m, is drawn outward or forward,so as to render the pawl O inoperative, and the cross-belt K Willquickly gig back theeairinge.

This device has been practically tested, and it operates well, cutt thedriving-shaft running at a. speed of from tlii'ee to i've hundredrevolutions per minute. Having thus described our invention, we claim:ns new, and desire to secure 1by-Letters Patentl. The arrangement ofthe driving-pulley C, rod N, slotted lever M, pulleys I L, belt K, theshafts B JJ, pnwl O, und spring l), to operate in the manner 4and. forthe purposes specified.

2. The adjusting of the inne!` end of the pawl O by means of the springP and cord fm, and the lever Q., er its equivalent, substantially ns andfor the purpose set forth.

ing from tive to eight thousand feet per day,

ALFRED GIFFORD; ROBERT L. FELTS.

Witnesses:

J Anus W. INSIS, E. B. MANN.

